Process for producing highly water absorptive polymer.

摘要

There is provided a process for producing a highly water absorptive polymer, which comprises irradiating ultraviolet rays on a highly water absorptive polymer having carboxylic groups and/or carboxylate groups with its water content being 0.01 to 40 parts by weight per 1 part by weight of said highly water absorptive polymer to obtain a highly water absorptive polymer having a lower content of unpolymerized monomers than said highly water absorptive polymer.